Auto Maker Says 33,000 Vehicles May Have Been Assembled With a Wrong Part

General Motors Co. on Wednesday temporarily halted U.S. and Canadian sales of its best-selling car, the Chevrolet Cruze, over potential problems with air bags made by Japanese supplier Takata Corp.

GM initially ordered dealers to stop selling all new or used 2013 and 2014 Chevrolet Cruze cars then restricted the order to about 33,000 of the vehicles that it believes are equipped with air bag inflators that were assembled with the...